Winnower of grain



B. D. SANDERS Grain Winnower.

N0.11,178. Patented1un'e 27,' 1864.

PATENT onnIoE.

B. D. SANDERS, or HOLLIDAYS covn, VIRGINIA.

WINNOWER OF GRAIN.

Specification of Letters Patent No. 11,178, dated June 27, 1854.

To all whom it may concern:

Be it known that I, B. D. SANDERS, of Hollidays Cove, in the county of Brooke and State of Virginia, have invented a new and useful I Improvement in Grain-Separators; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, reference being had to the an nexed drawings, making a part of this specification, in which- I Figure 1, is a vertical section of my improved separator, theplane of section being through the center. Fig. 2, is a front View of ditto. The front of the blast spout being removed. Fig. 3, is a plan or top view of ditto. The top of the blast spout and chamber being removed.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to a new and useful improvement in grain separators for cleansing grain from smut, dirt, chaff, and other impurities, and also separating the light from the heavy or sound grain, and depositing each part of any value in separate chambers or hoppers. j

The nature of my invention consists in the combination of an inclined screen adjoining the feeding hopper, and suction spout subdivided into two or more compartments, the above parts being arranged as will be fully shown hereafter, j j

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A represents a vertical blast spout connected at its upper end with a horizontal chamber B, which is connected on its under side with a fan box G, provided with a fan D, see Fig. 1. In the lower end of the blast spout A there is an inclined screen E, see Figs.1,2, and 3, and on one side of the blast spout there is a hopper F which communicates with the elevated end of the screen E, see Fig. 2. The bottom of the chamber B between the blast spout A and the entrance to the fan box C has an inclined or hopper shaped bottom as shown in Fig.1.

ward nearly to the screen E, a sufficient space being left between the edges of; the partitions and screen to allow the grain to pass under them; on the side I of the blast spout A and within the chamber B, are three valves or slides (e) (f) (g) one to each of the compartments (5) (0) (03). The lower ends of the slides or valves extend below the .bottom of the chamber B as shown in Fig. 1. The inclined bottom of the chamber B is provided with three spring doors or traps (h) (h (it), one to each of the compartments 6) (c) (d).

The several parts being now described, the operation will be explained.

Motion is given the fan D by a band pass ing aroundthe pulley J on the shaft K of thefan. The rotation of the fan D produces a partial vacuum in the fan box G, and a current or blast of air passes up the spout A over thetop of the valves or slides (a) (f) (g) under the projection H, over the partition G, and down into the fan box C, and is ejected through an exit spout L at the side of the fan box. The arrows 1 show the direction of the blast. The grain to be separated is placed in the hopper F and passes over the screen E and falls off at the depressed end. The blast as it passes up through the screen E and the spout A causes the grain to take the direction indicated by the doted arrows 2; for instance, the grain is arrested by the firstpartition (a) and a portion of the light foreign substances such as dust, smut, chaff, etc., is carried up the blast through the first compartment (5). The grain then passes under the first partition and strikes against the second partition (a) and the heavier chafl, etc., ascends through the second compartment 0). The grain then passes under the second partition and strikes against the side of the blast spout, and the light or imperfect grain is carried up in the compartment (cl), the

sound or heavy grain falling 0d the depressed end of the screen E. The dust smut and other light substances is carried by the current of air into the fan box and is ejected through the exit spout L, while the other substances which are of value for food for cattle, and light grain which will produce inferior flour are deposited in the divisions (e) (g) of the chamber B. The draft or strength of the current in each of the compartments (6) (0) (cl) is regulated by the slides or valves (6) (f) (9). Any substance of value is prevented from passing into the fan box with the current by means of the projection H, which-causes the current to have a serpentine course throughthe chamber B, and the light and useless substances will therefore only follow the current, the others by their greater specific gravity falling into the several divisions of the chamber B. When a sufiicient quantity of any substance has fallen into either of the divisions of the chamber B, so as to overcome the spring of the trap (it), the trap opens and the substance falls into a proper receptacle beneath.

The separator above described, with the exception of the partitions (a) (a) which divide the blast spout and chamber B, was formerly patented by me, and it may be considered the parent of the various separators in use, in which a suction blast is used.

I do not claim the valves or slides (e), (f), (g), for regulating or modifying the blast in the several compartments of the blast spout, for they have been previously used, neither do I claim the spring traps h), (hm (h), for they also are well known,

B. D. SANDERS.

Witnesses WM. BROWN, 0- BROWN. 

